/**
 *
 *    geo-platform
 *    Rich webgis framework
 *    http://geo-platform.org
 *   ====================================================================
 *
 *   Copyright (C) 2008-2021 geoSDI Group (CNR IMAA - Potenza - ITALY).
 *
 *   This program is free software: you can redistribute it and/or modify it
 *   under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version. This program is distributed in the
 *   hope that it will be useful, but WITHOUT ANY WARRANTY; without
 *   even the implied warranty of MERCHANTABILITY or FITNESS FOR
 *   A PARTICULAR PURPOSE. See the GNU General Public License
 *   for more details. You should have received a copy of the GNU General
 *   Public License along with this program. If not, see http://www.gnu.org/licenses/
 *
 *   ====================================================================
 *
 *   Linking this library statically or dynamically with other modules is
 *   making a combined work based on this library. Thus, the terms and
 *   conditions of the GNU General Public License cover the whole combination.
 *
 *   As a special exception, the copyright holders of this library give you permission
 *   to link this library with independent modules to produce an executable, regardless
 *   of the license terms of these independent modules, and to copy and distribute
 *   the resulting executable under terms of your choice, provided that you also meet,
 *   for each linked independent module, the terms and conditions of the license of
 *   that module. An independent module is a module which is not derived from or
 *   based on this library. If you modify this library, you may extend this exception
 *   to your version of the library, but you are not obligated to do so. If you do not
 *   wish to do so, delete this exception statement from your version.
 */
package org.geosdi.geoplatform.support.primitive.bridge.implementor;

import org.geosdi.geoplatform.support.bridge.implementor.GPImplementor;

import java.util.Set;

/**
 * @author Giuseppe La Scaleia - CNR IMAA geoSDI Group
 * @email giuseppe.lascaleia@geosdi.org
 */
public abstract class GPPrimitiveImplementor<P extends Object> implements PrimitiveImplementor<P> {

    private final Class<P> primitiveClass;
    private GPImplementor.GPImplementorKey<Set<PrimitiveImplementor.PrimitiveImplementorKey>> key;

    public GPPrimitiveImplementor(Class<P> thePrimitiveClass) {
        this.primitiveClass = thePrimitiveClass;
    }

    /**
     * @return {@link String}
     */
    @Override
    public final String getPrimitiveName() {
        return this.primitiveClass.getSimpleName().toLowerCase();
    }

    /**
     * @return {@link Class<P>}
     */
    @Override
    public final Class<P> getPrimitiveClass() {
        return this.primitiveClass;
    }

    /**
     * @return {@link org.geosdi.geoplatform.support.bridge.implementor.GPImplementor.GPImplementorKey<Set<Class<?>>>}
     */
    @Override
    public final GPImplementorKey<Set<PrimitiveImplementorKey>> getKey() {
        return this.key = ((this.key == null) ? () -> prepareKey() : this.key);
    }

    /**
     * @return {@link Set<PrimitiveImplementorKey>}
     */
    protected abstract Set<PrimitiveImplementorKey> prepareKey();

    @Override
    public String toString() {
        return getClass().getSimpleName() + " {" +
                "  key = " + key +
                ", primitiveClass = " + primitiveClass +
                ", primitiveName = " + getPrimitiveName() +
                ", operatorLoader = " + getOperatorLoader() +
                '}';
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;

        GPPrimitiveImplementor<?> that = (GPPrimitiveImplementor<?>) o;
        return primitiveClass.equals(that.primitiveClass);

    }

    @Override
    public int hashCode() {
        return primitiveClass.hashCode();
    }
}
